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Classical Physics

- Principles developed before the rise of relativity and quantum mechanics. Mechanics, Electrodynamics, Thermodynamics, Optics...
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Jan16-12 Greg Bernhardt
Before posting anything, please review the Physics Forums Global Guidelines. Again, for some odd reason, people...
Apr22-11 05:26 AM
ZapperZ
1 46,947
Hi, I'm having a little trouble understanding why the field inside a charged conductor must be zero. I understand...
May6-08 08:44 PM
Feldoh
7 1,934
Sup guys, What is an electromagnetic wave? Now i understand that its made of oscillating electric and magnectic...
May6-08 08:15 PM
pzlded
3 1,570
Hi, I read in the Feynman Lectures Vol II that the assumption that the electron is a point leads to an infinite...
May6-08 07:58 PM
pzlded
10 5,963
Why not simply use a voltage field between concentric plates to remove electrons w/ undesired velocity, then use other...
May6-08 05:55 PM
pzlded
0 1,030
how can one reduce the parasitic resistance of an inductor coil? regards kautilya
May6-08 10:24 AM
marcusl
1 4,305
For Snell's law n2sin(theta2)=n1sin(theta1), I know that air has an index of refraction of approximately 1. But how do...
May3-08 10:11 PM
Redbelly98
7 1,792
i don't get this what he wrote... the internal force \vec{F_{ij}} between two particles is \vec{F_{ij}}=\nabla_{i}...
May3-08 08:29 AM
pardesi
5 2,536
in the "derivation" of 'principle of vitual work' Goldstein started with this he wrote the force F acting on each...
May3-08 04:43 AM
pardesi
4 1,699
This is a review I wrote for a text-book on Amazon but it really applies to all the E&M books I have seen. I put it...
May2-08 01:39 PM
pam
1 1,371
Guys, I don't quite understand the concept of magnetic dipole moment as a vector. Suppose we have a magnet (like...
May2-08 01:21 PM
pam
2 3,824
Is there an amazing way I can demonstrate Rotational Kinetic Energy in a classroom? It's for a presentation and I've...
May2-08 02:03 AM
Spoon.
7 2,485
In planetary motion, how do you find change in velocity and change in time in relation to a change in distance?...
May1-08 11:17 PM
an emu
5 8,875
Gravitational potential energy usually arises due to the force of attraction experienced by a body. When a small body...
May1-08 07:05 PM
jbunten
4 2,083
Hello! This is a question purposed to me by my professor as we went over the mathematics behind the diffusion of...
May1-08 04:50 PM
zeus77
1 913
Hi! This is my first post here. I'm currently studying analytical/classical mechanics and have some problems...
May1-08 04:17 PM
jostpuur
2 1,743
Hello to all, I want to analyze and make model of the water mixing process as shown in file in attacment....
May1-08 01:30 PM
Micko
2 4,778
Dear everyone, I am researching genetic algorithms and at the moment I am trying to solve a problem how would...
May1-08 11:02 AM
Lojzek
1 6,012
I've been obsessed with the derivation in the attachment for hours now, all rights & credits to the one who came up...
May1-08 10:58 AM
TimothypoeZ
0 1,173
Why doesn't it violate Law of Conservation of Energy? Isn't it energy that comes out of nowhere?
May1-08 10:48 AM
Lojzek
5 2,668
I am an artist. I am trying to cast a large sharp (in focus) shadow through a piece of lace onto a wall. It either...
May1-08 07:16 AM
Redbelly98
10 3,307
Does anyone know of any software I could use to look at thermal dispersion in silica? It is to basically see how far I...
May1-08 05:39 AM
Lee
2 1,019
I am having a small misunderstanding regarding the concept of work, and I am hoping someone could clear things up for...
Apr30-08 07:05 PM
xaenn
7 8,026
Hey, instantaneous power is computed by F dot v, but this equation should only be valid if F is constant correct?
Apr30-08 05:15 PM
breez
10 7,531
If two cars were at the top of a uniform slope, and the cars are identical in every way other than their mass, which...
Apr30-08 05:02 PM
avarmaavarma
3 2,868
I was wondering about a good application to plot the path of a particle in a magnetic bottle (i.e. the magnetic field...
Apr30-08 04:23 PM
lzkelley
5 1,493
Why a cellphone rings inside microwave oven? Does the microwave oven don't block cellphone radiation?
Apr30-08 12:01 PM
mgb_phys
2 10,141
I've got a problem, involving non-constant acceleration: If we fire a spherical bullet horizontally into a...
Apr30-08 09:02 AM
malawi_glenn
4 1,759
Hi, Just got a doubt, which is probably silly but nonetheless cannot solve. Say you have a conductor placed in an...
Apr30-08 03:21 AM
lormanti
4 4,139
Hi dear Forumers, I 've run into a little thermodynamic problem: There is a closed vessel, containing a given...
Apr30-08 02:44 AM
Telmerk,the Magician
3 4,590
This question was presented as one of those "think about it" questions in my physics class. Its not worth any points,...
Apr30-08 12:44 AM
daveyman
18 2,748
I understand how an LC circuit oscillates and radio waves are a result. I also understand that any light from the...
Apr30-08 12:20 AM
bassplayer142
4 2,512
I would be very eager to have someone explain to me why it is justified to assume harmonic time dependence when...
Apr29-08 02:39 PM
Enjolras1789
0 3,779
Say we have an induced circuit. My book states that we cannot use the loop rule on an induced circuit because we...
Apr29-08 07:10 AM
cabraham
1 1,572
Hi, How would I go about calculating the rate at which charge/electrons would leak off a metal surface that had...
Apr28-08 09:23 PM
axawire
0 1,829
Another noobish question: Let's say there is an electromagnetic wave of constant wavelength and constant peak...
Apr28-08 07:11 PM
Usaf Moji
3 1,954
Hello, (I'm not fluently in english, sorry if it's not a pure english) I use FEMM software for caculate energy....
Apr28-08 04:54 PM
lba7
4 1,168
As i know there are several diffrent way to derive the canonical equations. Some of them starts from a physical...
Apr28-08 09:56 AM
Lojzek
1 1,624
If you were to amplitude modulate a laser such the helium-neon with a microwave signal for instance at 10 GHz, and if...
Apr28-08 08:21 AM
Andy Resnick
1 1,055
How is the electromagnetic field different from aether???? if there is an em field why is it not considered to be at...
Apr28-08 06:57 AM
DaleSpam
2 1,544
I am doing some basic heat calculations about a CW laser illuminated tungsten tip (which should be used for...
Apr28-08 03:38 AM
Benindelft
2 1,533

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